A high-yield cultivation method for winter wheat and summer corn with three crops in two years

Abstract

The embodiment of the present invention provides a two-year three-ripening high-yield cultivation method for winter wheat and summer corn, which relates to the field of agricultural planting and can improve resource productivity and improve the grain production level in Tianjin. The method includes: selecting high-quality wheat varieties and corn varieties, wherein the wheat variety is Jinmai 26, and the corn variety is Lingyu No. 4; the growth period of the two varieties is 343 days, and the light and heat resources are fully utilized. Replanting in different years does not violate the agricultural season; the summer corn is ripe with green water; in the year of low temperature in the corn season, on the basis of increasing the sowing amount, Jinmai 26 will be sown from October 5th to October 20th to ensure that the winter The lowest accumulated temperature is 580°C, let the accumulated temperature be 180-220°C to fully mature Lingyu No. 4; when the soil available phosphorus content is higher than 25 mg / kg, apply phosphorus fertilizer to Jinmai 26 throughout the year; Lingyu No. 4 iron stubble No-tillage and wide row double-grain mechanized direct seeding; straw is returned directly to the field.

Description

technical field [0001] The invention relates to the field of agricultural planting, in particular to a high-yield cultivation method for two-year three-ripening of winter wheat and summer corn. Background technique [0002] Tianjin is located in the northern part of the North China Plain, with a frost-free period of about 210 days, 2,296 hours of sunshine, an annual average temperature of 12.7°C, an accumulated temperature of ≥0°C of 4,783°C, and an average annual precipitation of 553 mm. The rainfall is mainly concentrated in June, July, and August. Wheat Both the full growth period and the grain filling period of summer maize are in the dry season, which is a typical semi-arid and semi-humid area. It is the northern fringe area where wheat and corn are double-cropped in my country, and the heat resources are slightly tight. [0003] At present, Tianjin's grain production is facing multiple pressures. One is the pressure to ensure the total grain production under the circums...

AI Technical Summary

Problems solved by technology

[0004] Adopting the two-year three-cropping system is one of the main ways to increase the multiple cropping index. If the growth period of winter wheat and summer corn varieties is too long or the maturity period is delayed due to climate reasons, the harvesting time of the upper and lower crops is too long, too much precipitation or Insufficient water cannot sow and harvest in time, which affects the normal implementation of the two-year three-crop cultivation model